Explain why it iw warmest during the middle of the day and cooler in the morning and evening answer

It's the warmest in the middle of the day for the reason that the sun typically tends to be brighter at that time. While in the evening, the sun is getting ready to go down and in the mornings the sun just came up, so it is not at its highest point so the rays are not as strong. So since the sun's rays are striking part of the planet straight during noontime, therefore giving us more heat, but is striking us at a viewpoint at night or in the morning, therefore giving us less heat.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s